What is the purpose of using a sign or stencil on firewalls according to IBC?

The correct choice is based on the necessity of maintaining safety and compliance in building design and construction. According to the International Building Code (IBC), firewalls are critical structural elements that provide necessary protections against the spread of fire between different areas of a building or between adjacent buildings. Using a sign or stencil on firewalls serves to satisfy legal requirements by clearly identifying these walls, which are essential features for fire safety.

This identification helps ensure that all relevant personnel, including firefighters, building managers, and maintenance workers, are aware of the fire-resistance capabilities of these walls. By consistently marking firewalls, the intent is to enhance safety measures and ensure compliance with regulations aimed at protecting the lives of occupants and the integrity of the building.

The other possibilities—deter trespassers, for promotional reasons, or to identify significant structural elements—lack the direct connection to fire safety and regulatory compliance that the use of signage or stenciling on firewalls under IBC requirements entails.